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Finding the Fourth Proportional to 14,806.61, 22,218.99 and 7,791.66

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Solution

The fourth proportional to 14,806.61, 22,218.99 and 7,791.66 is: 11,692.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,806.61 : 22,218.99 = 7,791.66 : x
  2. Step 2: Convert to fraction form
    14,806.61/22,218.99 = 7,791.66/x
  3. Step 3: Cross multiply
    14,806.61x = 22,218.99 × 7,791.66
  4. Step 4: Simplify right side
    14,806.61x = 173,122,815.62
  5. Step 5: Solve for x
    x = 173,122,815.62/14,806.61
  6. Step 6: Final answer
    x = 11,692.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.